Planning, Process, Analysis: Prototype Testing Procedure:   Goal: The goal for our procedure is to determine how effective each of our thermos. prototypes are at conserving heat of 150ml of boiling water over time. We also needed to stay within a budget and make it aesthetic pleasing.   Materials:   -Beaker (250 ml)  -Hot Plate  -Thermometer (Celsius)  -Funnel  -Tongs  -150ml of boiling water  […]